Fair Value (Details) - USD ($) $ in Thousands	Jul. 04, 2015	Jan. 03, 2015
Short-term investments:
Available-for-sale securities	$ 96,560	$ 90,445
Trading securities held in Non-Qualified Deferred Compensation plan, or NQDC	24,226	27,034
2015 Notes Hedges		523,930
Total Assets	536,229	1,369,905
Liabilities
2015 Notes Embedded Conversion Derivative		523,930
Foreign currency exchange contracts	536	3,163
Total Liabilities	536	527,093
Money market funds [Member]
Assets
Cash equivalents	415,443	728,496
Corporate debt securities [Member]
Short-term investments:
Available-for-sale securities	36,258	34,894
Bank certificates of deposit [Member]
Short-term investments:
Available-for-sale securities	13,107	21,910
United States Treasury securities [Member]
Short-term investments:
Available-for-sale securities	34,040	19,374
United States government agency securities [Member]
Short-term investments:
Available-for-sale securities	7,159	9,208
Commercial paper [Member]
Short-term investments:
Available-for-sale securities	4,195	3,186
Marketable equity securities [Member]
Short-term investments:
Available-for-sale securities	1,801	1,873
Fair Value Measurements, Level 1 [Member]
Short-term investments:
Trading securities held in Non-Qualified Deferred Compensation plan, or NQDC	24,226	27,034
2015 Notes Hedges		0
Total Assets	482,669	785,985
Liabilities
2015 Notes Embedded Conversion Derivative		0
Foreign currency exchange contracts	0	0
Total Liabilities	0	0
Fair Value Measurements, Level 1 [Member] \| Money market funds [Member]
Assets
Cash equivalents	415,443	728,496
Fair Value Measurements, Level 1 [Member] \| Corporate debt securities [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 1 [Member] \| Bank certificates of deposit [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 1 [Member] \| United States Treasury securities [Member]
Short-term investments:
Available-for-sale securities	34,040	19,374
Fair Value Measurements, Level 1 [Member] \| United States government agency securities [Member]
Short-term investments:
Available-for-sale securities	7,159	9,208
Fair Value Measurements, Level 1 [Member] \| Commercial paper [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 1 [Member] \| Marketable equity securities [Member]
Short-term investments:
Available-for-sale securities	1,801	1,873
Fair Value Measurements, Level 2 [Member]
Short-term investments:
Trading securities held in Non-Qualified Deferred Compensation plan, or NQDC	0	0
2015 Notes Hedges		523,930
Total Assets	53,560	583,920
Liabilities
2015 Notes Embedded Conversion Derivative		523,930
Foreign currency exchange contracts	536	3,163
Total Liabilities	536	527,093
Fair Value Measurements, Level 2 [Member] \| Money market funds [Member]
Assets
Cash equivalents	0	0
Fair Value Measurements, Level 2 [Member] \| Corporate debt securities [Member]
Short-term investments:
Available-for-sale securities	36,258	34,894
Fair Value Measurements, Level 2 [Member] \| Bank certificates of deposit [Member]
Short-term investments:
Available-for-sale securities	13,107	21,910
Fair Value Measurements, Level 2 [Member] \| United States Treasury securities [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 2 [Member] \| United States government agency securities [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 2 [Member] \| Commercial paper [Member]
Short-term investments:
Available-for-sale securities	4,195	3,186
Fair Value Measurements, Level 2 [Member] \| Marketable equity securities [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 3 [Member]
Short-term investments:
Trading securities held in Non-Qualified Deferred Compensation plan, or NQDC	0	0
2015 Notes Hedges		0
Total Assets	0	0
Liabilities
2015 Notes Embedded Conversion Derivative		0
Foreign currency exchange contracts	0	0
Total Liabilities	0	0
Fair Value Measurements, Level 3 [Member] \| Money market funds [Member]
Assets
Cash equivalents	0	0
Fair Value Measurements, Level 3 [Member] \| Corporate debt securities [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 3 [Member] \| Bank certificates of deposit [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 3 [Member] \| United States Treasury securities [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 3 [Member] \| United States government agency securities [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 3 [Member] \| Commercial paper [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 3 [Member] \| Marketable equity securities [Member]
Short-term investments:
Available-for-sale securities	$ 0	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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